金融工程点评：国防军工指数偏离修复模型效果点评

Group 1 - The core viewpoint of the report is that the model assumes a cyclical pattern of price deviation and regression relative to a reference index, with a defined limit on the degree of deviation, allowing for strategic buying when prices approach this limit [4][5]. - The model's design principle involves statistical analysis of historical data to identify reasonable thresholds for price deviations, which can signal buying opportunities when prices fall below these thresholds [4][5]. - The model tracks the performance of the Shenwan Level 1 Defense Industry Index relative to the CSI 300 Index over a defined period from January 4, 2010, to March 18, 2025 [4][5]. Group 2 - The total return of the interval strategy is reported at 159.57%, significantly outperforming the buy-and-hold return of 42.53%, resulting in an excess return of 117.05% [4]. - The maximum drawdown recorded is 50.87%, with the longest drawdown period lasting 2108 trading days, indicating substantial volatility in the strategy's performance [4]. - The model's effectiveness is questioned due to the observed price movements falling outside the historical sample range, suggesting that the strategy may not provide reliable guidance for future investments in the defense industry index [5].